Title:
METHOD FOR REMOVING OIL FROM WASHING LIQUID
Document Type and Number:
WIPO Patent Application WO/2022/181708
Kind Code:
A1
Abstract:
Provided is a method for removing oil from a washing liquid that enables efficient removal of fine oil from a washing liquid by using a general-purpose filter element for separating out foreign matter. A plurality of annular protrusions 22d are formed on an outer peripheral surface 22a of a filter element 22 along substantially the entire axial-direction length of the filter element 22, whereby numerous small eddies 40 are formed in annular trenches 22e between the annual protrusions 22d. The eddies 40 are produced by the Coanda effect, whereby the washing liquid flows along the annular trenches 22e due to the viscosity of the washing liquid. Because the eddies 40 have negative pressure, fine oil 41, which is lighter than water, is separated out from water and trapped by fibers in the filter element 22, which is oleophilic.
Inventors:
SAZAWA MASAJI (JP)
SAZAWA NAOSUKE (JP)
SAZAWA NAOSUKE (JP)
Application Number:
PCT/JP2022/007662
Publication Date:
September 01, 2022
Filing Date:
February 24, 2022
Export Citation:
Assignee:
SHOUNAN ENG INC (JP)
International Classes:
B01D17/022; B01D29/11; B01D39/16
Foreign References:
| JP2011104471A | 2011-06-02 | |||
| JPH08108004A | 1996-04-30 | |||
| JP2014231055A | 2014-12-11 | |||
| JP3182493U | 2013-03-28 | |||
| JPH1133315A | 1999-02-09 |
Attorney, Agent or Firm:
TOMISAKI Motonari et al. (JP)
Download PDF:
Previous Patent: INORGANIC/ORGANIC HYBRID COMPLEMENTARY SEMICONDUCTOR DEVICE AND METHOD FOR PRODUCING SAME
Next Patent: CONNECTOR
Next Patent: CONNECTOR